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Hydro Services TB3 0.1 Tipping Bucket Raingauge

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The Hydrological Services Tipping Bucket Raingauge is recognised as the world standard for measuring rainfall and precipitation in remote and unattended locations. The integrated syphon mechanism delivers high levels of accuracy across a broad range of rainfall intensities. Each unit consists of a collector funnel with stainless steel leaf filter, an integrated syphon control mechanism, an outer enclosure with quick release fasteners, and base which houses the tipping bucket mechanism.

Hydrological Services TB3 0.1 Tipping Bucket Raingauge

• Catch size 282.8 mm
• Accuracy not affected by rainfall intensity
• Rainfall capacity 0.1 mm
• Long term stable calibration
• Stainless Steel leaf filter resists blocking
• Optional internal Data Logger, with no external power requirement
• In-built discharge outlets at base for water collection and analysis
• Dual output signal for data collection and telemetry
• World class meteorological instrument
• Easy to service with low maintenance requirement

The unit includes dual output reed switches with varistor protection as well as dual rainfall discharge outlets for water collection and/or analysis.

The bucket tips when precipitation of 0.1mm has been collected. Each tip activates a reed switch closure which is detected by a Data Logger and/or Telemetry System.

SPECIFICATIONS
Receiver: 282.8 mm diameter machined aluminium rim. Powder coated.
Bucket capacity: 0.1mm of rainfall.
Sensitivity: one tip.
Measuring range: 0 to 500 mm / hr.
Humidity: 0 to 100 %
Temperature: - 20 to +70C
Calibration accuracy: + 2 % for intensities from 25 to 500 mm/hr. Long term stable calibration.

Syphon: 0.4 mm capacity of rainfall
Contact system: dual reed switches potted in soft silicon rubber with varister protection.
- Max Capacity: 12 VA (0.5 amp max.)
- Resistance: Initial contact resistance 0.1 OHMS
- M.T.B.F: 108 to 109 Operations

Materials
Syphon- made from brass with a non hydroscopic outer body
Bucket: chrome plated, injection moulded non hydroscopic ABS balanced ±0.05 gms.
Base: die-cast aluminium.

Level: bulls eye level adhered to aluminium base.
Mounting holes: three 10 mm diameter mounting holes with 117 mm p.c.d. cast in feet attached to outside diameter of base.
Drain fittings: able to attach 12 mm inside diameter tubing, to catch rainfall after passing through buckets.
Pivots: ground sapphire pivots with hard stainless steel shaft.
Insect covers: stainless steel mesh on all openings to prevent insects and ants entering gauge.

Height: 342mm (13.5"); Weight: 3 kg (6.6 lbs)
Packed Dimensions: 4.2 Kg, 0.03m3 (9.3 lbs, 1.1ft3)

Ordering Information:

Metal Bucket
TB3/0.2/M TIPPING BUCKET RAIN GAUGE 0.2 MM METAL BUCKET
TB3/0.5/M TIPPING BUCKET RAIN GAUGE 0.5 MM METAL BUCKET
TB3/1.0/M TIPPING BUCKET RAIN GAUGE 1.0 MM METAL BUCKET
TB3/0.01/M TIPPING BUCKET RAIN GAUGE 0.01 INCH METAL BUCKET
Plastic Bucket
TB3/0.2/P TIPPING BUCKET RAIN GAUGE 0.2 MM ABS PLASTIC BUCKET
TB3/0.5/P TIPPING BUCKET RAIN GAUGE 0.5 MM ABS PLASTIC BUCKET
TB3/0.01/P TIPPING BUCKET RAIN GAUGE 0.01 INCH ABS PLASTIC BUCKET

Accessories
Description Part No.
Data Logger ML1/ML1-FL
RS232 to USB Converter DL307
Field Calibration Device TB320 / FCD
TB3 Heater Kit TB323
TB3 Bird Guard TB333
TB3 Pole Mounting Bracket TB334

The Tipping Bucket Raingauge can be used in conjunction with Hydrological Services data logger model ML1. The logger is rugged and compact, it records the date and time of occurrence of tips from the raingauge up to 100,000 events with 1 Second Resolution can be stored in the ML1's memory. The data is stored in a flash EPROM.

The ML1 fits inside the model TB3 Raingauge. Its compact design makes it ideal for incorporation into any piece of equipment where intelligent data acquisition and logging are required.